#include<stdio.h>
int main()
{
    int n,i,un1,un2,un;
    for(n=2;n<3;){
        printf("Please enter required number of generation:");
        scanf("%d",&n);
        if(n<3)printf("\n Enter error ! \n");
    }
    un=un2=1;
    printf("The repid increase of rabbitc in first %d generations is as felow:\n",n);
    printf("1\t1\t");
    for(i=3;i<=n;i++){
        un1=un2;un2=un;un=un1+un2;
        printf(i%10?"%d\t":"%d\n",un);
    }
    printf("\n");
}